But to be honest it wont be the same "quality" seal , it might fit and look like right but it wont last and stay flexible over time and stay sealed etc that's why its cheaper and they are in the market to sell cheaper versions as the Original is expensive .
I've been caught before with Porsche " OEM quality" , as a lot of Porsche OEM parts ( particular rubbers ) do not come or have manufactures labels or boxes so just because its cheaper and says its OEM doesn't means its of the right quality . You do pay for you get in this world and "quality" is subjective .
One rule I have is, I need to know the manufacture and it must come fully boxed/labeled if not I'm not interested ....by cheap buy twice and cry twice , by the more expensive/correct part, buy once cry once !
Example I replaced the rear wheel bearings on my 964 , purchased the bearings off Design 911 as "OEM Quality " so saved a few pounds. Three years latter I had a odd rumble at the back appear , after hrs & many ears, it couldn't be the bearings so went for the diff bearings, CV jonts etc as they were still original. After the diff was rebuilt and gearbox replaced I then had the same issue, to find it was one of the rear bearings had cracked after I had spent £2K with no resolution .
So yes I had saved £80 for two Design911 for OEM quality bearings, but to then spend £2K fixing it all again . I replaced both rear bearings for Porsche "Expensive" bearings & not had an issue since !!
Lesson learnt ;-)